7 files changed, 7 insertions, 0 deletions
diff --git a/test/fileutils/clobber.rb b/test/fileutils/clobber.rb
index 9f946651bf..ae416e9fa5 100644
--- a/test/fileutils/clobber.rb
+++ b/test/fileutils/clobber.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'fileutils'
 require 'test/unit'
 require 'tmpdir'
diff --git a/test/fileutils/fileasserts.rb b/test/fileutils/fileasserts.rb
index b6067f6d84..512d31e95f 100644
--- a/test/fileutils/fileasserts.rb
+++ b/test/fileutils/fileasserts.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # $Id$
 
 module Test
diff --git a/test/fileutils/test_dryrun.rb b/test/fileutils/test_dryrun.rb
index 03f6bed387..bc59f8d339 100644
--- a/test/fileutils/test_dryrun.rb
+++ b/test/fileutils/test_dryrun.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # $Id$
 
 require 'fileutils'
diff --git a/test/fileutils/test_fileutils.rb b/test/fileutils/test_fileutils.rb
index 1a6f1c5c55..f5ca9d21e2 100644
--- a/test/fileutils/test_fileutils.rb
+++ b/test/fileutils/test_fileutils.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # $Id$
 
 require 'fileutils'
diff --git a/test/fileutils/test_nowrite.rb b/test/fileutils/test_nowrite.rb
index 946eed3b6c..f331d51e46 100644
--- a/test/fileutils/test_nowrite.rb
+++ b/test/fileutils/test_nowrite.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # $Id$
 
 require 'fileutils'
diff --git a/test/fileutils/test_verbose.rb b/test/fileutils/test_verbose.rb
index fb069bcf14..1daf9f0531 100644
--- a/test/fileutils/test_verbose.rb
+++ b/test/fileutils/test_verbose.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # $Id$
 
 require 'test/unit'
diff --git a/test/fileutils/visibility_tests.rb b/test/fileutils/visibility_tests.rb
index a140614674..6bb5a9fc8f 100644
--- a/test/fileutils/visibility_tests.rb
+++ b/test/fileutils/visibility_tests.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'fileutils'